Patek Philippe Tonneau-shaped Art Deco Gentleman's Watch

Hinged bezel, straight lugs with platinum screwed bars. D. silver "guilloché" with a white oval medallion at the center bearing painted stylized Arabic numerals. “Moderne" blued steel hands. M. Cal. 9''', gilt brass, 15 jewels, straight line lever escapement, cut bimetallic balance, flat balance-spring.